PS Weight gain - what's that all about?

A brief aside on the fact that I weighed in this morning heavier than I started the week.
Lucky for me [I'm convincing myself here] I know my weight fluctuates all over the place and so I am concentrating on the average rather than the daily ups and downs.
So if I look at the average, I am still less than Monday - thank God!! I just wish the scales would behave themselves and just c -r-e-e-p down everyday instead of jumping all over the place. Sigh ...